NOTE: Data do not include in-transits, shipments transiting U.S. ports but
not part of U.S. official merchandise trade.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics;
based on special tabulations from U.S. Department of Transportation, Maritime
Administration, May 2002; and U.S. Department of Commerce, U.S. Census Bureau,
foreign Trade Division, May 2002.